Industrial Water Treatment ›› 2020, Vol. 40 ›› Issue (3): 58-62. doi: 10.11894/iwt.2019-0294

• Research and Experiment • Previous Articles     Next Articles

The effects of A/O/O and O/A/O processes on the reduction behavior of PAHs in the treatment of coking wastewater

Dong Ma1,2(),Na Zhou1,2,Yuan Jia1,2,Naiyou Xiao1,2   

  1. 1. Research Institute of Coal Chemistry, China Coal Research Institute, Beijing 100013, China
    2. State Key Laboratory of High Efficient Mining and Clean Utilization of Coal Resources, China Coal Research Institute, Beijing 100013, China
  • Received:2019-08-30 Online:2020-03-20 Published:2020-03-20
  • Supported by:
    中国煤炭科工集团科技创新基金(2018MS002)

A/O/O和O/A/O对焦化废水中PAHs削减行为的影响

马栋1,2(),周娜1,2,贾媛1,2,肖乃友1,2   

  1. 1. 煤炭科学技术研究院有限公司煤化工分院, 北京 100013
    2. 煤炭资源高效开采与洁净利用国家重点实验室, 北京 100013
  • 作者简介:马栋(1992-),硕士,研究实习员。E-mail:1054140162@qq.com
  • 基金资助:
    中国煤炭科工集团科技创新基金(2018MS002)

Abstract:

The effects of A/O/O and O/A/O treatment processes on the reduction behavior of PAHs were examined. The results showed that the removal efficiency of the total PAHs in the wastewater in the A/O/O process was 95.85%, which was higher than 88.50% of the O/A/O process. The sludge in both two processes showed concentration enrichment of the PAHs with four rings and above. The A/O/O process showed better results for the biodegradation of refractory high-ring PAHs(more than 4 rings). The PAHs reduction capability of the A/O/O process was 73.44% higher than 64.64% of O/A/O process, which indicated that the A/O/O process was greater than the O/A/O process in terms of PAHs reduction.

Key words: coking wastewater, A/O/O, O/A/O, PAHs, reduction behavior

摘要:

考察了A/O/O以及O/A/O两种工艺对PAHs削减行为的影响,分析发现A/O/O工艺对水相中总PAHs的去除率为95.85%,高于O/A/O工艺的88.50%;两种工艺中污泥均表现出对4环及以上PAHs的富集;A/O/O工艺对于高环PAHs(4环以上)的生物降解表现出更佳的效果;A/O/O工艺对于总PAHs削减能力为73.44%,高于O/A/O工艺的64.64%,说明A/O/O工艺在PAHs的削减方面要强于O/A/O工艺。

关键词: 焦化废水, A/O/O, O/A/O, PAHs, 削减行为

CLC Number: